Journal truing or turning tool



H. A. LEE.

JOURNAL TRUING OR TURNING TOOL.

APPLICATION FlLED JAN. 3!, 1921.

1,41 1,441. Patent d Apr-4,1922.

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UNITED STATES many A. LEE, or nANsAs CITY, mssomu.

JOURNAL raume on rmmme TOOL.

Specification of Letters Patent.

Patented Apr. 4, 1922.

Application filed January 31, 1921. Serial No. 441,132.

To all whom it may omwern:

Be it known that I, HARRY A. LEE, a citizen of the United States, andresident of Kansas City, county of Jackson, State of Missouri, haveinvented a certain new and useful Improvement in Journal Truing orTurning Tools, of which the following is a complete specification.

This invention relates to improvements in journal turning or truingtools, and has for its object to produce a tool of this character whichmay be readily and easily applied in position on the crank shaft of amotor car without taking down said shaft.

Another object is to produce a tool of this character which may beoperated by hand or which may be used in connection with a lathe orother source of power.

A still further object is to produce a tool of this character of suchform and proportion that adjustment of the cutting element or knife ofthe tool to accommodate shafts or the like of different diameter shallautomatically effect such lateral adjustment of the cutter as shallinsure its position in a plane perpendicular to the face of thestationary jaw, which extends diametrically through the shaft or objectto be operated upon and thereby insure accurate truing or turningoperations regardless of the diameter of the shaft or other object.

Another object is to produce a tool having a handle of such characterthat it will automatically break in the event the opera tor attempts toturn it in the wrong direction in performing the truing or turningoperation.

With: the objects named in View the invention consists in certain noveland useful fea. tures of construction and organization of partsas'hereinafter described and claimed;

and in order that it may be fully understood, reference is to be had tothe accompanying drawing, in which:

Figure 1 is a side view of the tool partly broken away to more clearlyillustrate the means for feeding the cutter into contact with the shaftbeing turned.

Figure 2 is an edge view of the tool.

Figure 3 is a section on the line III-III of Figure 1.

Figure 4 is a perspective View of a clamping plate forming a part of theinvention.

In the said drawing, where like reference.

characters identify corresponding parts in all of the figures, 1 is agrip handle provided with a break joint portion 2, in order thatpressure, as hereinafter explained, may be applied on the handle only inthe direct1on indicated by the arrow, Figure 1, said handle bearing atits upper end an abutment arm 3, which is secured at right angles to ashank portion 4 by means of a bolt The opposite end of the shank portionis formed with an extension 6, standing at an angle oftwenty seven andone half (27%") degrees to the shank portion. Projecting from the upperend of the extension and at a r ght angle thereto is a jaw 7 which isprovlded wlth a hard metal wearing plate 8 secured in place by screwbolts 9.

The upper end of the abutment arm 3 is provideduvith an openingaccommodating an ad usting screw 10, provided with a grip portlon 11 atone side of plate 9 and with an abutment collar 12 at the opposite sideof said plate, these parts 11 and 12 preventing endwise movement of thescrew when turned as well as offering a fixed bearing for such screw.The screw 10 extends parallel with shank 4 and, engages a threaded bore13 formed on a sliding sleeve 14 mounted on the shank, said sleeveembodying a removable plate 15 in order that the sleeve may be secured111 or removed from operative position.

The upper end of the sliding sleeve 14 is provlded with an L-shapedrecess 16 to accommodate a cutter member 17, held immovably in positionby means of a clamping plate 18, which is held in position by means of apair of screw bolts 19, it being noted that said bolts engage threadedopenings in the sliding sleeve 14:, as shown. It will also be noted thatthe clamping plate 18 is provided between the screw bolts 19 with a V-haped projection or lug 20, having a threaded socket 21 for engagementby a thumb screw 22, said screw extending through a guard 23 andclamping the same against the lower face of said lug so that it shallstand approximately parallel'to the extension 6 of the shank, and beemployed, if necessary, to aid in maintaining the tool in operativeposition upon a shaft 24 in the initial part of the turning or truingoperation of the tool as there is no tendency for the tool to be forcedout of engagement with the shaft when turned in the proper direction.

a perpendicular through the axis A of the shaft, dropped from the planeof the face of the wear plate 8, andthis relative position of the partsis due to the fact that the shank portion 4 is set at an angle of twentyseven and one half (27?) degrees to its extension 6. The drawing showsoperative application of the tool to a shaft on one and oneuarter(1}),inches in full lines and to a s aft of two (2) inches in dottedlines, and in both cases it will be noted that the edge of the cutterstands in the relative position above-mentioned with respect to the axisof the shaft. The adjustment of the cutter is effected by rotation ofthe screw 10, as this 0 eration imparts sliding movement in onedirection or the other to the sleeve 14 upon shank 4, and due to theangle of the latter will draw the cutting edge a distance downwardparallel to the face of extension 6 just twice the distance the cuttingedge is moved away or at ri ht angles to said-extension,

thus maintaining at all times the relative positions above-mentioned.

It is believed that no recapitulation of the operation of the tool isnecessary, except to state, that the revolving of the shaft or tool 7must be in such direction that the force applied on handle 1 will alwaysbe in the direction indicated by the arrow, Figure 1, the

break joint 2 being provided in order to automatically guard againstaccidental turning of the members in the wrong direction.

The use of this tool produces a perfectly smooth and .accurately roundedsurface on the shaft or other object, and should the surface to beturned or rounded be somewhat wider than the cutting member, the tool orshaft may be relatively shifted while the truing operation is inprogress. It will also be apparent that a cutter a little shorter or alittle longer than the clamping plate 18 may be successfully employed,when the surface to be turned varies within a limited de rec in width.

rom the above description it will be apparent that I have produced atool of the character described, which possesses all of the featurespointed out as desirable, and while I have described and illustrated thepreferred embodiment of the same, I reserveprojectlng from saidextension for contact with a shaft, a cutter for engagement with theshaft at the opposite side thereof from and in a plane extendingperpendicularly to the said jaw through the axis of the shaft, and meansfor adjusting said cutter on said shank toward and from said jawat anangle of substantially twenty seven and one half (27%) degrees withrespect to said extension.

3. A tool of the character described, comprising a shank having anextension, a jaw projecting from said extension for contact with ashaft, a cutter for enga ement with the shaft at the opposite side tereof from and in a plane extending perpendicularly to the said jawthrough the axls of the shaft, and screw-actuated means for adjustingthe cutter on said shank toward and from said jaw at an angle ofsubstantially twenty seven and one half (27%) degrees with respect tosaid extension.

4. A tool of the character described, comprising a shank having anextension, a jaw projecting from said extension for contact with ashaft, a sleeve mounted for sliding on the shank toward and from saidjaw at an angle of substantially twenty seven and one half (27%) degreeswith respect to said extension, and a cutter rigidly carried by saidsleeve with its cutting edge extending transversely of and parallel withthe adjacent face of the said jaw.

5'. A tool of the character described, comprising a shank having anextension, a jaw projecting from said extension for contact with ashaft, a sleeve mounted on-said shank, screw-actuated means foradjusting said sleeve upon theshank toward and from said jaw at an angleof substantially twenty seven and one half (27%) degrees with respect tosaid extension, and a cutter rigidl carried by said sleeve and extendingpara lel with the adjacent face and transversely of said jaw.

6. A tool of the character described, comprising a shank having anextension at one end and a handle at the other, the handle being pivotedfor swin ing movement in one direction from a resetermined position andincapable of swinging in the opposite direction from said position, ajaw projecting from said extension, a sleeve mounted adjustable on saidshank toward and from said jaw at an angle of substantially twenty sevenand one half (27%) degrees with respect to said extension, and a cutterrigidly carried by said sleeve and extending parallel with the adjacentface and transversely of said jaw.

7 A tool of the character described, comprising a shank provided at itsopposite ends with an extension and a handle extending in parallelrelation but in a diiferent plane, a jaw projecting from said extensionat right angles thereto, a sleeve adjustable on said shank toward andfrom said extension at an angle of substantially twenty seven and onehalf (27%) degrees with respect thereto, and a cutter carried by saidsleeve and extending parallel withthe adj acent face and transversely ofsaid jaw.

8. A tool of the character described, comprising a shank, provided atone end with an extension extending at an angle to the shank, a jawprojecting from said extension at right angles thereto, a handleextending parallel with said extension and detachably secured to theopposite end of the shank from said extension, asectional cutterslidingly mounted on said shank and provided with a threaded bore, ascrew journaled in said handle and engaging said threaded bore of saidsleeve, and a cutter rigidly carried by said sleeve and extendingparallel with the adjacent face and transversely of said aw.

9. A tool of the character described, comprising a shank having anextension, a jaw projecting from said extension for contact with ashaft, a cutter for engagement with the shaft at the opposite sidethereof from and in a plane extending perpendicularly to the said jawaxially of the shaft, means for adjusting said sleeve on said shanktoward and from said jaw at an angle of substantially twenty seven andone half (27%) degrees with respect to said extension, and a guardsecured .to said sleeve and projecting therefrom substantially parallelwith said extension, for engagement with the opposite side of said shaftfrom said extension to hold the shaft between the said jaw and cutter.

In witness whereof I hereunto aflix my signature.

HARRY A. LEE.

